As expected, Samsung has now officially unveiled 2GHz GDDR4 parts, based on the 80-nm process. At that speed, it makes it the fastest memory on the market. It'll start off with 512Mb densities on 32-bit data buses, and supposedly is already prepped for sampling. When put into multiple units, it's easy to see how they could dramatically increase performance, particularly in games and CAD programs.
On a similar note, Samsung claims that within the next few months, the first 50nm-based 16Gb NAND flash chips will enter mass production.